no web gui & password issues = majorly stressed out

I built an OMV 2 months ago, set it all up and everything was working great. I had access to CLI, web GUI.

Fast forward to yesterday when i had a power cut. I booted up and all i get on web gui is "it works..." which is the default apache web server screen.

After a lot of searching on the forum i knew i had to stop the apache services due to an add i must of installed. This is were the stress begins. I cannot login to the CLi locally on the omv. I know the root password is set on installation and i know that i set it to a specific password however i cannot log in. Before all you lot state that I must have forgot the password i can assure you i havent as i recorded it in my personal password store. i cannot login using root or admin on the CLi.